Risk-Adjusted, Clinical Outcomes in Bloodless Program Patients

Risk-Adjusted, Clinical Outcomes in Bloodless Program Patients

Frank SM
January 01,2014
The Johns Hopkins Medical Institutions
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Although clinical outcomes have been reported for patients who do not accept allogeneic blood transfusion (ABT), many previous studies lack a control group, fail to use risk adjustment, and focus exclusively on cardiac surgery.


We report a risk-adjusted, propensity score-matched, retrospective case-control study of clinical outcomes for inpatients who did not accept ABT (bloodless, n = 294) and those who did accept ABT (control, n = 1157). Multidisciplinary specialized care was rendered to the bloodless patients to conserve blood and optimize clinical outcomes. Differences in hemoglobin (Hb), mortality, five morbid outcomes, and hospital charges and costs were compared. Subgroups of medical and surgical patients were analyzed, and independent predictors of outcome were determined by multivariate analysis.


Overall, mortality was lower in the bloodless group (0.7%) than in the control group (2.7%; p = 0.046), primarily attributed to the surgical subgroup. After risk adjustment,bloodless care was not an independent predictor of the composite adverse outcome (death or any morbid event; p = 0.91; odds ratio, 1.02; 95% confidence interval, 0.68-1.53). Discharge Hb concentrations were similar in the bloodless (10.8 ± 2.7 g/dL) and control (10.9 ± 2.3 g/dL) groups (p = 0.42). Total and direct hospital costs were 12% (p = 0.02) and 18% (p = 0.02) less, respectively, in the bloodless patients, a difference attributed to the surgical subgroup.


Using appropriate blood conservation measures for patients who do not accept ABT results in similar or better outcomes and is associated with equivalent or lower costs. This specialized care may be beneficial even for those patients who accept ABT.


This is one of five key articles on the techniques, safety, and efficacy of bloodless medicine and surgery, and the risks of blood transfusion. Each training module in the Bloodless Classroom also has a subject-specific bibliography. The official website of the Hospital Information Services of Jehovah’s Witnesses offers an extensive library of medical articles organized by specialty. The Hospital Information Services department is available to provide references for specific conditions and clinical situations and may be contacted by phone or email at any time.